Hdf5Archive corrupt error, Error, T11560: No suitable reader found for the file format of file

Software: Substance Painter 7.1.1 build 959 on Windows Server 2019 Datacenter 64 bit version 1809

Hardware: Intel Xeon Platinum 8259CL CPU @ 2.50GHz, 128 GB RAM

When saving any new Substance file, and then updating/overwriting that file ("Save" instead of  "Save As"), this Hdf5Archive corruption error appears. This includes the Autosave function: any file that has been Autosaved cannot be opened again. Saving up a brand new file ("Save As") is the only stable way to reopen the file for future work to be done in it.

Error log attached.